Question

пж помогите 3/5+x= 4/5 y-2/7=6/7

15 баллов​

Answer 1

Ответ:

1) 3/5+x=4/5 x=4/5-3/5 x=1/5 или 0,2

2) y-2/7=6/7 = 6/7 + 2/7 = 8/7

y = 8/7 = 1 целая 1/7

Answer 2

Ответ:

$frac{3}{5} + x = frac{4}{5} \ frac{3 + 5x}{5} = frac{4}{5} \ 3 + 5x = 4 \ 5x = 4 - 3 \ 5x = 1 \ x = frac{1}{5}$

$y - frac{2}{7} = frac{6}{7} \ frac{7y - 2}{7} = frac{6}{7} \ 7y - 2 = 6 \ 7y = 6 + 2 \ 7y = 8 \ y = frac{8}{7 } \ y = 1 frac{1}{7}$

Answer 3

спасибо большое